class_docstr: data dictionary for pushing to tb
      
code: def add_image(self, image_dict):
      self.datapack[self.IMAGE_NAME].update(image_dict)
  
imports: import abc
  import tensorboardX
label_desc: Use image node_id 6 for calling the TensorboardDatapack obj's underlying member method code with example usage: obj.add_image(image_dict) without return types